ELSEIF

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ELSEIF is used in an IF...THEN block statement to offer an alternative condition.


Syntax

IF condition THEN
{code}
ELSEIF condition2 THEN
{code}
ELSE
{alternative-code}
END IF


Description

  • ELSEIF statements require a separate code block line with THEN for each alternative condition.
  • There can be more than one ELSE IF statement in a single-line IF statement.
  • If there is only one possible alternative condition (such as 0 or NOT 0), use ELSE instead.
  • If the comparisons are based on multiple conditions being true, it may require many ELSEIF comparisons. ELSE could help cover some of those conditions.
  • You can use SELECT CASE when IF blocks have a long list of alterative ELSEIF conditions.


Relational Operators:
Symbol Condition Example Usage
= Equal IF a = b THEN
<> NOT equal IF a <> b THEN
< Less than IF a < b THEN
> Greater than IF a > b THEN
<= Less than or equal IF a <= b THEN
>= Greater than or equal IF a >= b THEN


Examples

Example 1: IF statement using ELSE IF in one statement line.

IF x = 100 THEN COLOR 10: PRINT x ELSE IF x > 100 THEN COLOR 12: PRINT x ELSE PRINT "< 100"


Example 2: IF statement block

IF x = 100 THEN ' must place ANY code on next line! COLOR 10: PRINT x ELSEIF x > 100 THEN COLOR 12: PRINT x ELSE : PRINT "< 100" END IF


See also



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